Daniel bateman



v D.-BATBMAN. Apparatus for Hardening and Tampering Wire.

No. 224,127; Patented Feb. 3, I880.

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. UNITED STATES PATENT OFFICE.

DANIEL BATEMAN, or Low Moon, NEAR BRADFORD, YoRKsHIRnENeLAND.

APPARATUS FOR-HA'RDENING AND TEMP-BRING WIRE.

SPECIFICATION forming partof; Letters Patent No. 224,127, dated Application filed November 21,1879.

To all whom it may concern I Be it known. that I, DANIEL BATEMAN, of Low Moor, near Bradford, Yorkshire, England, have invented a new and useful Improvement in Apparatus for Hardening and Tem-' pering Steel Wire, of which the'followin g is a specification. I

My invention relates to certain improvements in apparatus for hardening and tempering steel wire, more especially such asis intended to be used in the making ofv card-teeth; and my invention consists in certainimprovements in theconstruction of the heating-box, the tempering-bath, and annealing-furnace, as more fully described hereinafter.

In the accompanying drawings, Figure 1 is a vertical section of my improved tempering apparatus; Fig. 2, a sectional plan, Fig. 3, a

transverse section on the line 1 2; and Figs. 4

and 5, detached views, referred to hereinafter, of different parts of the apparatus.

A is a box, of fire-clay or other refractory material, the cover of this box consisting of detachable slabs a, of the samematerial. A pipe, B, with open ends, extends lengthwise entirely through this box, and below this pipe is a perforated tube, D, the opposite ends of which pass through one of the. side walls of the box, each end of the tube communicating through a branch, b, with a gas-pipe, and through a branch, d, with an air-pipe, in which air at a pressure of about fourpounds per square inch is maintained. Each of these branches is furnished with a suitable cock, so as to pllfoperly regulate the supplyof air' and gas to the tube D.

The box A. has a longitudinal slot, or is perforated at the bottom, or, it may be furnished with a suitable grate.

Near one endof the box A, and in linetherewith, is a trough, E, lengthwise through which passes a tube, F, which, when the apparatus a is in operation, is immersed'in water, a supply of the latter being maintained in the trough by an inlet-pipe,'e, and outlet-pipe f,'so arranged that while a proper depth of watenis maintained within the trough fresh water shall continuously flow through thesame.

Below the trough E is a reservoir, G, for receiving oil, which, by means of anysuitable pumping device, is forced up into alif elevated February 3, 1880.

reservoir, and passes thence through the pipe h into the tube F, from which the oil is permitted to flow through an outlet-pipe, i, into the reservoir below. The outlet branch is extended upward from the tube a short distance before it is turned down toward the trough,

so that while the oil flows freely throughthe said tube the latter-will always be full of oil.

On each end of the tube F a flange or plate, m, is secured to the trough E, and in each flange is a dovetailed recess, n, for receiving the gate 10, by which the upper half of the end of the pipe is closed, the lower half being closed by the flange m. The under edge of the gate i has as many notches as there are wires to be tempered, so that while the wires can pass freely through the tube F the gate 19 will prevent the escape of much oil from the tube.

Whatever oil does escape, however, will flow into the reservoir G below.

Near the end of the water-trough E, and in A line therewith, is a'box, H, of fire-clay or other refractory-material, the box being covered by a metal plate, I, beneath which is a perforated 7 5 tube, J, the latter communicating at one end with the air and gas pipes t and w, each of which is furnished with a suitable cook.

The box A is, in the first instance, filled with granulated coke or cinders, so that both the pipe B and tube D shall beembedded therein, both gas and air being then introduced into the tube D, and the gas "being ignited where it passes through the perforations of the said tube. After the granulated coke has become red-hot the gas may be out ofi", the introduction of air, however, into the tube beingcontinued. It hasbeen found that by this plan a uniform temperature can. be maintained within the box for many hours without further expense of gas than that first required for a proper ignition of the granulated coke.

It may be advisable to add small supplies ofgranulated coke to that in the box from time to time, which can be done after remov- 5 ing one or more of the covering-slabs, the spent f cinders falling through the openings in the bottom of the box.

' The wires to, arranged side by side, pass through the pipe B, where'they are heated to a bright-red heat, in which condition they pass into and through theoil contained in the pipe F, the wires thus hardened finally passing from the pipe over and in contact with the plate I, the heat of which and the speed at which the wires pass are so regulated that the 5 desired temper, indicated by the color of the wires, will be imparted thereto.

I claim as my invention 1. In a wiretempering apparatus, the com"- bination of a box, A, and a longitudinal pipe, IO B, surrounded with coke or cinders in said box, with a perforated tube, D, below said pipe, and having air and gas supply branches, all'substantiully as set forth.

2. The combination of the water-trough E,

Witnesses ALEXANDER PATTERSON, HARRY SMITH. 

